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CentOS Job Cost Overview

Typical total cost of Upwork CentOS projects based on completed and fixed-price jobs.

Upwork CentOS Jobs Completed Quarterly

On average, 130 CentOS projects are completed every quarter on Upwork.

130

Time to Complete Upwork CentOS Jobs

Time needed to complete a CentOS project on Upwork.

Average CentOS Freelancer Feedback Score

CentOS Upwork freelancers typically receive a client rating of 4.85.

4.85
Last updated: August 1, 2015
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  1. Boian M.

    Boian M.

    16yr exp - Linux Systems Architect / ISP / IT Consultant -

    Bulgaria - Tests: 3 - Portfolio: 3

    * gathering customer's requirements (type of applications deployed) * specifying hardware * deploying (software and hardware installation, including in data centers) * technical writing on cloud-computing topics, security, High-availability, clusters and others * monitoring / profiling * management * architecture audits * virtual infrastructures based on KVM / OpenVZ / VMware / XEN / Sun Ray + Virtualbox * Fully-virtualized and HA architectures deployment (Proxmox, ESX, OpenStack) and network virtualization (Neutron); * network solutions based on Brocade / Cisco / HP / Mikrotik products * full internet provider development * providing adequate documentation in each stage (doc/pdf/Visio) of Linux/UNIX based systems, also managing small IT teams, looking for new challenging projects. * BIND, djbdns, mydns, ndns based DNS architectures; * Qmail / Exim / Postfix-based mail systems; * Websystems to include Apache / MySQL / PostgreSQL / PHP / Perl configurations; * Rails solutions; * Complete webhosting managment - Cpanel/WHCMS /Plesk etc.; * Backup solutions (EMC Retrospect, Open source solutions - Bacula, Amanda, ZRM etc.); * Cloud computing IAAS and PAAS(Amazon EC2, OpenStack) and related ecosystems (Ceph); * HA solutions : Pacemaker, Corosync, GlusterFS, MooseFS, DRBD, Ceph * Load testing (jMeter, Tsung, iozone, vdbench, ab, siege); * MySQL - single servers, Master/Slave configurations or Master/Master; * Tomcat/Resin based Java application servers; * Monitoring deployment and administration (Zabbix, Nagios); * Nagios / MRTG / Cacti monitoring and data acquisition; * Design/development and modification of PHP/Ruby/Perl-based web systems; * MVC framework development on Rais / CakePHP / Codeigniter; * Zibra, Zarafa, iRedMail, phplist, google apps, Also extensive experience in deployment and management of server configurations in data centers.

    $44.44 /hr
    6,463 hours
    4.97
  2. Sherwin D.

    Sherwin D.

    VoIP Expert / IP-PBX Specialist / Asterisk Ninja

    Philippines - Tests: 4 - Portfolio: 17

    Over 12 years hands-on experience. i have a great knowledge on VoIP Hardware and Applications from open source softswitches, MultiTenant PBX and predictive dialers (Asterisk, Freepbx, FusionPBX, BlueBox, Thirdlane, FreeSwitch, A2Billing, Elastix, Trixbox, Vicidial, GoAutoDial, etc), to licensed softswitches (Voipswitch, Nextone, Voicemaster, PortaOne, Mera, etc) and other VoIP gateways. I have at least currently total of 500 IP-PBX server deployments and also do provide VoIP termination services. I work as a part-time consultant for a number of VoIP companies in the Philippines. I have a broad knowledge about networking and wireless. this includes routers, firewalls, access points and VSAT. I also do hardware/software troubleshooting and web designing (joomla and wordpress) and basic programming (php, html and perl) I am confident that i can deliver any work satisfaction guaranteed

    $33.33 /hr
    2,182 hours
    4.99
  3. Petr B.

    Petr B.

    Senior Developer, PM

    Russia - Tests: 5 - Portfolio: 2

    I have strong background in UNIX/Linux software development, Master's Degree in Computer Science. I worked on Enterprise high-load distributed hosting automation systems as a Team Leader (3.5 years in SWsoft, Inc., now called Parallels). For the last 6 years I'm running my own small software development business in Russia with primary focus on Python/Django apps. Not pure Web but often involving integration with hardware (Proximity Cards, Sensor Screens) or external systems like Payment Processing, SMS Gateways, GABRIEL (Airline Reservation System), etc. I can take an idea and turn it into a working business, through all the intermediate stages. Also I have experience of investing my own funds in my projects, so I feel the difference between "perfect code" in a month and "good enough" code that increases the revenue right now. Nevertheless, my code is very good: no copy-paste, always written with performance, flexibility and security in mind, etc. On oDesk I'm looking for (and actually find :) interesting projects with a sight on long-term fruitful cooperation. I'm also open to smaller activities (e.g., consulting) where my knowledge can be helpful.

    Groups: Coding Champs

    $40.00 /hr
    1,668 hours
    5.00
  4. Bogdan daniel S.

    Bogdan daniel S.

    VCP, MCSA, Exchange, Vmware, HyperV, Servers Expert Admin

    Romania - Tests: 8 - Portfolio: 1

    10+ years experience in Information Technology (IT) Major areas of expertise: VMware and Microsoft virtualization technologies. Designing and implementing fault-tolerant virtualization clusters SAN and NAS systems (iSCSI, FC) Windows 2003 / 2008 / 2012 Server * Active Directory * Microsoft ISA Server and TMG * Clustering * MS Windows XP/Vista/7/8 desktop/workstation operating systems * Centralized anitivirus systems WSUS * TCP/IP, Switching and Routing * Firewalls IBM, HP, Dell Servers * DNS, DHCP, Wins * Print Server * File Server * Network and Servers documentation * LAN hardware/software administration, design, installation and configuration * Print Server * LAMP Administration * Linux services : squid, postfix, dovecot, firewall, ldap, mysql, nagios, dhcp, bind etc Certifications: MCP - Microsoft Certified Professional MCSA - Microsoft Certified Systems Administrator VCP - Vmware Certified Professional VCP-510 * VCA-DCV - Vmware Certified Associate Data Center Virtualization.

    Groups: Microsoft Certified Professionals

    $22.22 /hr
    2,646 hours
    4.68
  5. Ferenc S.

    Ferenc S.

    Wordpress/HTML/CSS Expert - Linux System Administrator

    Hungary - Tests: 7 - Portfolio: 17

    Main areas of my expertise: » CMS systems (Wordpress, Joomla, Drupal, etc.) » HTML and CSS » Linux system administration (Debian, CentOS, Ubuntu, etc.) » Site moving/migration (Wordpress, Joomla, Magento, Prestashop, etc.) » Malware removal / cleaning infected sites » Site speedup / optimization (Improving Pagespeed score, reducing load times, setup caching, CDN, etc.) • Web design/developing: Over the last 5 years i've developed a wide range of websites for startup companies, small businesses and individuals. My favourite platforms are Wordpress and Joomla but i work with other CMS systems too. I'm familiar with the most popular components and plugins and i have very good problem solving skills. Besides that, i'm a HTML and CSS expert and i use these skills every day. You can find some of my work in my portfolio (I'll try to update it often). I also have experience in E-Commerce systems and SEO. • System administration: I installed, configured and managed many servers in the past. I'm familiar with FreeBSD, Debian, Ubuntu, CentOS and almost any other Linux distribution. I know how to install and configure a LAMP server and i'm good with web hosting panels, system security, Apache, E-mail systems and almost everything related to Linux servers. Try me and i won't fail you! I'm a fast, professional and reliable candidate who always stick to deadlines. My first objective is to satisfy my employer not to make money (Look at my ratings and see for yourself). I'm here because i'm seeking the opportunity to find the job(s) which suits me the best, leads me forward and helps me improving my skills.

    $16.67 /hr
    443 hours
    4.99
  6. Anatolii R.

    Anatolii R.

    node.js (ex. php) backend webdeveloper

    Russia - Tests: 7 - Portfolio: 10

    I'm one of the 3% most active JavaScript users on github - see first link in my portfolio. I have passed nodejs test among 10% most skilled nodejs developers - https://www.odesk.com/exams/_10426641 I mainly develop scalable RESTfull NodeJS servers for native mobile or single page applications or phantomjs based webscrappers trying to keep them simple and fast. I'm proficient with MySQL,PostgreSQL, AmazonRDS, MongoDB, Redis as databases, and can use most suitable one for your project. I can be your devops for tasks of deploying nodejs applications on Centos 7 VPS/VDS servers, Amazon EC2 or Heroku Cloud Application Platform. In my work i use git,mercurial and SVN version control systems, for every job i create a private repo at bitbucket.org for (me and customer only) for feedback, bug reports and support. I have a strong background as php/zend/symfony 1.4 developer and linux user since 2002 year. My work hours is 5 PM to midnight - Moscow time.

    $33.00 /hr
    1,170 hours
    4.21
  7. Topher L.

    Topher L.

    Specializing in Server Administration, Configuration, and Deployment

    United States - Tests: 5

    I have been in the telecommunications industry for over 13 years and have worked as a consultant to major Fortune 500 companies in the past for both business and technology needs. I have a vast knowledge of anything that relates to the internet, both hardware and software realms and have worked on a variety of projects ranging from the simple to large scale transition ones spanning months at a time. I understand a business' need to get projects done right the first time and have always exceeded my clients goals. If they're not happy, I'm not happy. I have a dual bachelors degree from the University of Colorado at Denver in Business Information Technologies and Business Management. My Masters in Business Administration is in International Business and most IT skills I have picked up on my own or through various courses either online or at the local community college. I look forward to working with you and completing any projects you may have, from the quick fix to an entire server farm rebuild. I am also a word class back end programmer familiar with MySQL, Bash, PHP, Perl, and Python. Please, no front end design work, I don't have an eye for creativity (unless it's something simple of course). I look forward to working with you and any projects you may have for me.

    $39.00 /hr
    516 hours
    4.98
  8. Brett Richardson

    Brett Richardson

    Full-Stack Software Engineer

    Germany - Tests: 7 - Portfolio: 14

    I am a hard working and dedicated individual who is truly passionate about the web. I have developed a number of amazing web sites and applications using open source software. Recently I have been developing client-side focussed web applications using the Ruby-on-Rails 3 framework, and BackboneJS... styled with Twitter Bootstrap. I am passionately involved in projects such as Drupal CMS, EXTJS, Open Atrium, Ubuntu Linux, jQuery, Ruby On Rails, Google Android and many more. I am an expert in the following areas: Drupal, Ruby on Rails, jQuery, BackboneJS, Twitter Bootstrap, Flash - animation, AS2, AS3, banner ads, jQuery & AJAX, animation, standards based HTML and CSS.I also have great design skills (which always helps). I provide deployment to shared servers or linux-based VPS servers, and am familiar with Apache, Nginx and a number of other deployment. You can view some of my recent work and blog posts here: www.dablweb.com

    $80.00 /hr
    702 hours
    4.99
  9. Ivan G.

    Ivan G.

    Sys-admin, web-dev

    Poland - Tests: 9 - Portfolio: 1

    I am sysadmin with 5+ years experience and webdev with 4+ years experiene I can build fully functioning web/mail server, from scratch. I can make site on popular CMS with custom design from scratch. I have experience in: Linux/UNIX, Mac OS X; MS Windows/Server, Virtualization technologies. I can build custom decisions for many tasks, from home router for internet sharing, to big fault-tolerant web-server. Also I have some experience in webdevelop, I developed a wide range of websites using HMTL, XHTML, CSS, PHP, and MySQL including sites for startup companies and small businesses. One of the last projects was my personal startup ingamepower.com multiplayer games portal.

    $22.22 /hr
    727 hours
    4.96
  10. Faisal Naeem

    Faisal Naeem

    Linux/Web Hosting/Mail/DNS/NMS Server Administrator, IT Support

    Pakistan - Tests: 17 - Portfolio: 8

    An experienced Linux System Administrator with skills in CentOS/RHEL/Ubuntu/Fedora Server/VPS Configuration, Administration and Troubleshooting plus L2/L3 support expertise. I am having hands-on expertise to Mail / Web Hosting / Virtualization / Network Monitoring / Media Streaming / OpenGTS / DNS / FTP / Backup / Firewall Servers, Data center Administration and Server Security measures. My exposure to Amazon EC2, Linode, GoDaddy and Hostgator physical/virtual server environment is quite good. I am looking forward to utilize my experience and technical skills to offer quality work with client’s contentment. Possessing 08 years experience in Information Technology including 3.5 years experience in as System Administrator in Data Center (Systems Team) and currently working as Manager (Linux Systems). I have experience in administration of heterogeneous network with a variety of open source tools to provide an excellent IT infrastructure for organizations.

    $18.00 /hr
    12 hours
    4.70